Slack: Term used in arrow diagramming method for float. (来源：老牌的英语学习网站 http://www.EnglishCN.com)

Solicitation: Obtaining quotations, bids, offers, or proposals as appropriate.

Solicitation Planning: Documenting product requirements and identifying potential sources.

Source Selection: Choosing from among potential sellers.

Staff Acquisition: Getting needed human resources assigned to and working on the project.

Stakeholder: Individuals and organizations that are actively involved in the project, or whose interests may be positively or negatively affected as a result of project execution or project completion. They may also exert influence over the project and its results.

Start Date: A point in time associated with an activity’s start, usually qualified by one of the following: actual, planned, estimated, scheduled, early, late, target, baseline, or current.

Start-to-Finish (SF): See logical relationship.

Start-to-Start (SS): See logical relationship.

Statement of Work (SOW): A narrative description of products or services to be supplied under contract.

Subnet. A subdivision of a project network diagram, usually representing some form of sub-project.

Subnet work: See subnet.

Subproject: A smaller portion of the overall project.

Successor Activity: 1) In the arrow diagramming method, the activity that departs a node. 2)     In the precedence diagramming method, the "to" activity.

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T

Target Completion Date (TC): An imposed date that constrains or otherwise modifies the network analysis.

Target Finish Date: (TF). The date that work is planned (targeted) to finish on an activity.

Target Schedule: See baseline.

Target Start Date (TS): The date that work is planned (targeted) to start on an activity

Task: A generic term for work that is not included in the work breakdown structure, but potentially could be a further decomposition of work by the individuals responsible for that work. Also, level of effort on a project.

Team Development: Developing individual and group competencies to enhance project performance.

Team Members: See project team members.

Technical Performance Measurement: Technical performance measurement compares technical accomplishments during project execution to the project plan's schedule of technical achievement.

Time-Scaled Network Diagram: Any project network diagram drawn in such a way that the positioning and length of the activity represent its duration. Essentially, it is a bar chart that includes network logic.

Total Float (TF): See float.

Total Quality Management (TQM): A common approach to implementing a quality improvement program within an organization.

Transference: See risk transference.

Triggers: Triggers, sometimes called risk symptoms or warning signs, are indications that a risk has occurred or is about to occur. Triggers may be discovered in the risk identification process and watched in the risk monitoring and control process.

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V

Value Engineering (VE): Value 6ngineering is a creative approach used to optimize life-cycle costs, save time, increase profits, improve quality, expand market share, solve problems, and/or use resources more effectively. 

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W

Workaround: A response to a negative risk event. Distinguished from contingency plan in that a workaround is not planned in advance of the occurrence of the risk event.

Work Breakdown Structure (WBS): A deliverable-oriented grouping of project elements that organizes and defines the total work scope of the project. Each descending level represents an increasingly detailed definition of the project work.

Work Item: Term no longer in common usage. Synonymous with activity—see activity.

Work     Package: A deliverable at the lowest level of the work breakdown structure, when that deliverable may be assigned to another project manager to plan and execute This may be accomplished through the use of a subproject where the work package may be further decomposed into activities.